James K. Hammitt
Primary Faculty

James K. Hammitt

Professor of Economics and Decision Sciences

Center for Risk Analysis


Other Positions

CHDS Core Faculty

Center for Health Decision Science

Harvard T.H. Chan School of Public Health

Professor of Economics and Decision Sciences

Health Policy and Management

Harvard T.H. Chan School of Public Health

Senior Common Room, Winthrop House

Winthrop House -Other Academic

Harvard Faculty of Arts and Sciences


Professor Hammitt's research concerns the development and application of quantitative methods—including benefit-cost, decision, and risk analysis—to health and environmental policy. Topics include management of long-term environmental issues with important scientific uncertainties, such as global climate change and stratospheric-ozone depletion, evaluation of ancillary benefits and countervailing risks associated with risk-control measures, and characterization of social preferences over health and environmental risks using revealed-preference, stated-preference, and health-utility methods. He has served on six National Academies of Sciences panels and more than a dozen advisory committees to the U.S. Environmental Protection Agency and other government agencies. He received the Distinguished Achievement Award from the Society for Risk Analysis in 2015 and the Outstanding Achievement Award from the Society for Benefit-Cost Analysis in 2021 and is a fellow of both societies.

AB, 1978, Applied Mathematics, magna cum laude
Harvard College, Cambridge, Massachusetts

ScM, 1978, Applied Mathematics
Harvard University, Cambridge, Massachusetts

MPP, 1981, Public Policy
Kennedy School of Government, Harvard University, Cambridge, Massachusetts

PhD, 1988, Public Policy
Harvard University, Cambridge, Massachusetts